package com.mirror.frame.service;


/**
 * @Title: 业务类接口基类
 * @Copyright: Copyright (c) 2012-7-30
 * @Company: 幻方朗睿
 * @Author: Andy.D
 * @Version: 1.0
 */
public class BaseService {

    /**
     * NULL字符串转换成""
     * 
     * @param str
     * @return
     */
    public String nvl(String str) {
        if (str == null)
            return "";
        else
            return str;
    }
}